We interview Professor Michael Rectenwald of NYU about his new book, Nineteenth-Century British Secularism (2016). We learn how diverse non-religious philosophies were and what the real meaning of secularism was in its early decades. Secularism sought to build a society were believers and non-believers could co-exist peacefully and equally before the law. It was not anti-religion. In fact, many secularists saw willful atheism as harmful to society. One of our most thought-provoking shows, Buzzkillers!